High Income Child Support in Alberta: Why There Is No Fixed Formula

When a parent’s income climbs past $150,000 a year, the usual child support math gets more complicated. Most Alberta parents can look up the Federal Child Support Guidelines Table, plug in their income and the number of children, and get a clear monthly number. Above $150,000, section 4 of the Guidelines takes over, and the answer becomes far less predictable.

Section 4 of the Guidelines says that once a payor’s income exceeds $150,000, the court has two options. It can still apply the straight Table amount under section 3. Or, if the court finds that amount would be “inappropriate,” it can instead order the Table amount on the first $150,000 of income, plus whatever additional amount it considers appropriate for the income above that threshold, based on the condition, means, needs and circumstances of the children and each parent’s ability to pay.

The Supreme Court of Canada set the tone for how that discretion works in Francis v. Baker. The Court held that “inappropriate” means “unsuitable,” not just “too low.” That matters because it means a judge can increase or decrease the amount owing on income over $150,000. The Court also confirmed that there is a presumption in favour of the Table amount, and the parent seeking to move away from it must raise a genuine concern, backed by clear and compelling evidence, that the Table figure does not fit the children’s actual needs. At the same time, the Court warned against turning child support into disguised spousal support or a wealth transfer. Support is for maintaining the children, not equalizing household wealth between the parents.

The Alberta Court of Appeal applied and sharpened these principles in Ewing v. Ewing. The father’s income had spiked dramatically in certain years because of the sale of his business assets. The chambers judge had ordered a large increase in support largely because the father could afford to pay it. The Court of Appeal said that was the wrong focus. Ability to pay is only one part of the test. A judge also must look at what the children need and how they were living, not just what the payor earns. In Ewing, the evidence showed that an earlier large increase in support had not changed the children’s day-to-day lifestyle at all. That was a strong signal that pushing the number even higher would not benefit the children; it would just hand more money to the receiving parent. The court also lowered the bar the payor must clear, confirming that the evidence only needs to raise a concern about the Table amount, not meet some “formidable” burden.

One notable feature of Alberta case law is that courts have continued to apply the straight Table amount even at incomes far beyond $150,000, in some cases at incomes approaching the $1 million mark. Part of the explanation is likely practical rather than legal. The $150,000 ceiling in the Guidelines has not moved since the Guidelines came into force in 1997, while wages, especially at the high end, have grown substantially since then. An income level that might have looked extraordinary in 1997 is a good deal less unusual today. That has not changed the wording of section 4, but it may explain why some Alberta courts are less inclined to treat a high income on its own as a reason to depart from the Table. The result is that outcomes vary widely even among high income cases, and the specific factual matrix, how the income was earned, whether it is recurring, what the children’s actual lifestyle looks like, and what evidence the parties put forward, ends up carrying as much weight as the raw income number itself.

Between Francis, Ewing, and this broader pattern in the Alberta cases, a consistent picture emerges. Section 4 is not a mechanical exercise, and it is not a one-way ratchet toward ever higher awards as income rises. Courts start with a presumption in favour of the Table amount, but they will look closely at the real circumstances of the children, the source and nature of the income, and whether an award has improved the children’s lives. Two families with the same payor income can end up with very different support orders, because the outcome turns on the specific facts in front of the judge.

For high income parents in Alberta, the practical takeaway is that neither side can rely on a formula to carry the day. Good evidence about the children’s actual needs, lifestyle, and spending, and about where the income came from, matters just as much as the number on the payor’s tax return.